Improvement in the manufacture of stemmed glassware



2 Sheets- Sheet 1. J. OESTERLING.

Improvement in the Manufacture of Stemmed Glasswaref No. 132,216. Patented Oct. 15,1872.

2 Sheets--Sheet 2.

1.0ESTERLING. Improvement in the Manufacture of Stemmed Glassware N0.132,216 Patented Oct. 15,1872.

Jay. 8.

UNITED STATES PATENTQ FIGE.

JOHN OESTEELING, OF WHEELING, WEST VIRGINIA.

Specification forming part of Letters Patent No. 132,216, dated October 15, 1872.

To all whom it may concern: Be it known that I, J OHN OESTERLING, of Wheeling, in the county of Ohio and State of West Virginia, have invented a new and original method of Manufacturing Pressed-Footed Tumblers and Stemmed or Legged Glassware, by which the same can be made without moldjoint demarkations so as to resemble blown glassware, which, as ordinarily made, is very expensive, because requiring workmen of great skill to produce ware of uniform size and appearance; and I do hereby declare that the following isa full, clear, and exact description of thesame, and the mechanism for producing it,reference being made to the annexed drawing making a part of this specification, in which Figure 1 represents a sectional view of the bowl and stem-mold and plunger; Fig. 2, 'a sectional view of the foot-mold and supporting-frame; Fig. 3, a top View of the same;

Fig. 4 shows the stemmed bowl as it leaves the mold; Fig. 5 shows the same with the foot pressed on before finishing; Fig. 6 shows thefinished product; and Figs. 7 and 8 show champagne and Weiss-beer glasses, before and after finishing, made by my method.

To enable those skilled in the art to make and use my invention, I will proceed to describe its construction and working.

The stemmed bowl A, as shown in Fig. 4, is pressed in a jointless mold, Fig. 1, in which B represents the plunger; 0, the plungerring; D, the solid mold; F F, its handles; and G, the loose bottom. H shows the molten glass pressed between the plunger and mold.

The mold is then lifted 0d the loose' bottom G. and turned over to deliver the stemmed bowl, which is then taken and reheated to undergo the fire-polish, and when yet in a very hot state is carried and deposited on the supporting-frame at I. The supportingframe and foot-mold are constructed as follows: Kis the base-plate of the supportingframe. J is a circular recess cut therein to receive the spring-plate I, held by a counterscrew, L, to the central projection M of the base-plate. The spring-plate I is composed, preferably, of a circular piece of metal cut from an ordinary carpenters saw, and fits the recess J loosely. Its ofiice is to form an elastic bearing-surface for the stemmed bowl, while the foot is being pressed onto the latter to prevent its cracking or other injury. N N is the sectional supporting-plate, each section pivoted to a rod, 0, their front ends supported by legs 1?, which slide and rest on the baseplate, and are opened and closed by handles Q. 011 the center of the supporting-plates is the divided dovetail It, with a hole, S, passing through its center and that of the supportingplate for receiving the end of the stem of the partially-formed glass, as seen at as, Fig. 2. T T represent the sections of the foot-mold with cavities a for clasping the dovetail R, as usual; U, its handles; V, itshinge-lugs, two being on one section of the mold and one on the other, through which passes the pivot W. X

is the plunger, and Y the plunger-ring. Z represents the molten glass for forming the foot pressed onto the stem between the plunger and mold. a

This completes the operation: On now opening the sections of the foot-mold and supporting-plate, the glass, as represented in Fig. 5, canbe readily removed, The glass is'now finished by reheating the foot and flaring it out into the usual disk-shape, shown in Fig. 6. Thepressure for forming and uniting the foot to the base is necessarily so light as to produce no mold-joint ridges or seams upon the foot.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. The combination of the foot-mold, supporthigplate, recessed base-plate, and springplate I, all as and for the purpose described.

2. The process herein described for making pressed stemmed-footed ware having no moldjoint demarkations, so as to resemble blown ware, to wit: by first pressing the stemmed bowl in a solid mold; then reheating and fire 4 polishing it; then, while yet very hot, pressingthereon the foot in another mold and then reheating and finishing the foot, all as set forth.

I11 testimony thereof I have hereunto subscribed my name in the presence of two witnesses.

' JOHN OESTERLIN G.

Witnesses:

A. P. HALL, GEORGE SWIFT. 

